VIPER53DIP-E STMicroelectronics, VIPER53DIP-E Datasheet - Page 27

• Manufacturer Part Number: VIPER53DIP-E
• Description: IC OFFLINE SWIT PWM CM OTP 8DIP
• Manufacturer: STMicroelectronics
• Series: VIPER™r
• Type: Pulse Width Modulator Controllerr

Specifications of VIPER53DIP-E

• Output Isolation: Isolated
• Frequency Range: 93 ~ 300kHz
• Voltage - Input: 8.4 ~ 19 V
• Voltage - Output: 620V
• Power (watts): 30W
• Operating Temperature: 25°C ~ 125°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Current, Supply: 9 mA
• Frequency, Oscillator: 100 kHz
• Package Type: DIP-8
• Regulator Type: Switching
• Resistance, Thermal, Junction To Case: 20 °C/W
• Temperature, Operating, Range: -40 to +150 °C
• Time, Fall: 100 ns
• Time, Rise: 50 ns
• Voltage, Supply: 13 V
• Power Switch Family: VIPer53DIP
• Input Voltage: 0 to 19V
• Power Switch On Resistance: 900mOhm
• Output Current: 1.6A
• Number Of Outputs: Single
• Mounting: Through Hole
• Supply Current: 9mA
• Operating Temperature (min): -40C
• Operating Temperature (max): 150C
• Operating Temperature Classification: Automotive
• Pin Count: 8
• Mounting Style: Through Hole
• For Use With: 497-8435 - BOARD EVAL FOR VIPER53 28W497-6458 - BOARD EVAL BASED ON VIPER53-E497-6262 - BOARD REF SGL VIPER53 90-264VAC497-5866 - EVAL BOARD 24W NEG OUT VIPER53E
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6171-5

VIPer53 - E
The lowest load gives another condition for stability: The frequency F
the second order slope generated by the load pole and the integrator part of the error
amplifier. This condition can be met by adjusting the C
Equation 13
The above formula gives a minimum value for C
natural soft start function as this capacitor is charged by the error amplifier current capacity
I
Figure 22. Typical compensation network
COMPhi
With:
P
at start-up.
OUT1
=
V
---------------
R
2
OUT
L1
OSC
C
15V
COMP
TOVL
----------------------------------------------------- -
6.3
VDD
R
L1
Gm
C
OUT
R
2
COMP
10nF
COMP
COMP
. It can be then increased to provide a
P
------------------ -
P
COMP
Rcomp
Ccomp
OUT1
MAX
Transconductance error amplifier
SOURCE
DRAIN
value:
BW1
must not encounter
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